In novels, the exchange ratio of gold, silver, and copper coins was usually determined by the plot and background setting. In some novels, the exchange ratio might be set within a specific range such as 1:1, 1:2, etc. However, in other novels, the exchange ratio might be more flexible and determined according to different scenes and plots. Generally speaking, the conversion ratio of gold coins, silver coins, and copper coins in novels was more reliable. The following aspects needed to be considered: 1. The economic setting: Whether the economic system set in the novel is reliable and can support the setting of the exchange rate. 2. Storyline: Whether the setting of the exchange rate is consistent with the storyline and whether it can better promote the development of the storyline. 3. Setting the background: Whether the world view set in the novel supports the setting of the exchange ratio, such as whether the currency exchange ratio between different countries or regions is the same. Therefore, the conversion ratio of gold, silver, and copper coins in the novel depended on the plot and setting.